Ozone integration.

ui/ozone/demo/software_renderer.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/ozone/demo/software_renderer.h"
+
+#include "third_party/skia/include/core/SkCanvas.h"
+#include "third_party/skia/include/core/SkSurface.h"
+#include "ui/gfx/vsync_provider.h"
+#include "ui/ozone/public/ozone_platform.h"
+#include "ui/ozone/public/surface_factory_ozone.h"
+#include "ui/ozone/public/surface_ozone_canvas.h"
+
+namespace ui {
+namespace {
+
+const int kFrameDelayMilliseconds = 16;
+
+}  // namespace
+
+SoftwareRenderer::SoftwareRenderer(gfx::AcceleratedWidget widget,
+                                   const gfx::Size& size)
+    : RendererBase(widget, size),
+      vsync_period_(base::TimeDelta::FromMilliseconds(kFrameDelayMilliseconds)),
+      weak_ptr_factory_(this) {
+}
+
+SoftwareRenderer::~SoftwareRenderer() {
+}
+
+bool SoftwareRenderer::Initialize() {
+  software_surface_ = ui::OzonePlatform::GetInstance()
+                          ->GetSurfaceFactoryOzone()
+                          ->CreateCanvasForWidget(widget_);
+  if (!software_surface_) {
+    LOG(ERROR) << "Failed to create software surface";
+    return false;
+  }
+
+  software_surface_->ResizeCanvas(size_);
+  vsync_provider_ = software_surface_->CreateVSyncProvider();
+  RenderFrame();
+  return true;
+}
+
+void SoftwareRenderer::RenderFrame() {
+  float fraction = NextFraction();
+
+  skia::RefPtr<SkSurface> surface = software_surface_->GetSurface();
+
+  SkColor color =
+      SkColorSetARGB(0xff, 0, 0xff * fraction, 0xff * (1 - fraction));
+
+  surface->getCanvas()->clear(color);
+
+  software_surface_->PresentCanvas(gfx::Rect(size_));
+
+  if (vsync_provider_) {
+    vsync_provider_->GetVSyncParameters(
+        base::Bind(&SoftwareRenderer::UpdateVSyncParameters,
+                   weak_ptr_factory_.GetWeakPtr()));
+  }
+
+  timer_.Start(FROM_HERE, vsync_period_, this, &SoftwareRenderer::RenderFrame);
+}
+
+void SoftwareRenderer::UpdateVSyncParameters(const base::TimeTicks timebase,
+                                             const base::TimeDelta interval) {
+  vsync_period_ = interval;
+}
+
+}  // namespace ui